26 lines
834 B
Markdown
26 lines
834 B
Markdown
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# Arduino Mega RFID-RC522 wiring
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## Introduction
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**NB! RFID-RC522 requires only 3.3 V DC input voltage. Never connect it to 5V input.**
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<div class=pagebreak></div>
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## Wiring illustration
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## Wiring table
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| Signal | ATMega2560 port and pin | Arduino Mega 2560 pin | 5V to 3V converter | RFID-RC522 | Wire colour in illustration |
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| --- | --- | --- | --- | --- | --- |
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| Slave select | PORTB 0 | 53 | - | SDA | White |
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| SPI clock | PORTB 1 | 52 | - | SCK | Orange |
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| Master out slave in | PORTB 2 | 51 | - | MOSI | Green |
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| Master in slave out | PORTB 3 | 50 | - | MISO | Yellow |
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| RF522 reset | PORTL 0 | 49 | - | RST | Brown |
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| Ground | GND | GND | GND | GND | Black |
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| 5 V DC | - | 5V | VIN | - | Red |
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| 3,3 V DC | - | - | VOUT | 3.3 V | Red |
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